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• W2950731888 abstract "Simulation models of facial expressions suggest that posterior visual areas and brain areas underpinning sensorimotor simulations might interact to improve facial expression processing. According to these models, facial mimicry may contribute to the visual perceptual processing of facial expressions by influencing early stages of face processing, thus playing a crucial role in understanding the observed emotion. The aim of the present study was to assess whether and how early sensorimotor simulation influences face structural encoding/processing. A secondary aim was to investigate whether there is a relationship between alexithymic traits and sensorimotor simulation as a mechanism for fine facial expression discrimination. In order to examine the time-course of face processing, we monitored P1 and N170 components of the event-related potentials (ERP) in participants performing a fine discrimination task of facial expressions. An animal discrimination task was implemented as a control condition. In half of the experiment, participants could freely use their facial mimicry whereas, in the other half, they had their facial mimicry blocked by a gel. Our results revealed that the P1 ERP component was not modulated by the mimicry manipulation while the N170 amplitude was larger in the blocked mimicry condition when compared to the free mimicry condition selectively for the face stimuli. Interestingly, this modulation interacted with the alexithymic traits, with a reduction of the N170 amplitude modulation as a function of the facial mimicry manipulation for participants with the highest levels of alexithymic traits. These results demonstrate that sensorimotor simulation influences visual processing of facial expressions at early stages and that participants with higher alexithymic traits tend to underutilize the sensorimotor simulation system." @default.
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• W2950731888 date "2019-06-14" @default.
• W2950731888 modified "2023-09-27" @default.
• W2950731888 title "Blocking facial mimicry selectively alters early stages of facial expression processing" @default.
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